Abstract
A new species of Bacillariophyta (diatom) is described from Gokyo Cho, a lake near Mount Everest in the Himalayan Mountain Range. Water and algal samples were collected during an expedition to Sagarmatha National Park (SNP), Nepal in May 2016. Samples collected during this expedition reveal a new species of Lindavia, described herein with ecological information provided. The new species of Lindavia has three triangular undulations and depressions in the central area. This species has a likeness to the Pantocsekiella ocellata sensu lato group. It differs from the species in this group in undulation shape and ultrastructure numbers and distribution. Investigation into previously described Lindavia in the SNP region has identified a taxon, Cyclotella antiqua var. minor, which is herein transferred into Lindavia in order to conform to the parent taxon Lindavia antiqua.
References
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https://doi.org/10.1111/j.1095-8339.1882.tb00366.x
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https://doi.org/10.4236/jep.2013.47A003
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<a href="https://doi.org/10.1657/1523-0430(2006)38%5b394:ROOAPO%5d2.0.CO;2">https://doi.org/10.1657/1523-0430(2006)38[394:ROOAPO]2.0.CO;2</a>
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https://doi.org/10.11646/phytotaxa.217.3.2
Rao, S.R. (1963) A botanical tour in the Sikkim State, Eastern Himalayas. Bulletin of the Botanical Survey of India 5 (2): 165–205.
Sharma, C.M., Sharma, S., Gurung, S., Bajracharya, R.M. & Pradhan, N.S. (2010) Ecological studies on Gokyo wetlands, Sagarmatha National Park, Nepal. In: P.K. Jha & I.P. Khanal (Eds.) Contemporary Research in Sagarmatha (Mt. Everest) Region, Nepal. Nepal Academy of Science and Technology, Khumaltar, Lalitpur, pp. 139–154.
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https://doi.org/10.1007/BF00179535
Tartari, G., Previtali, L. & Tartari, G.A. (1998a) Genesis of the lake cadastre of Khumbu Himal Region (Sagarmatha National Park, East Nepal). In: Lami A. & Giussani, G. (Eds.) Limnology of high altitude lakes in the Mt Everest Region (Nepal). Memorie Dell’Istituto Italiano Di Idrobiologia 57: 139–149.
Tartari, G.A., Tartari, G. & Mosello, R. (1998b) Water chemistry of high altitude lakes in the Khumbu and Imja Kola valleys (Nepalese Himalayas). Limnology of high altitude lakes in the Mt Everest Region (Nepal). Memorie Dell’Istituto Italiano Di Idrobiologia 57: 51–76.
https://doi.org/10.5507/fot.2015.028
Bortolami, G. (1998) Geology of the Khumbu Region, Mt Everest, Nepal. In: A. Lami & G. Giussani (Eds.), Limnology of high altitude lakes in the Mt Everest Region (Nepal). Memorie Dell’Istituto Italiano Di Idrobiologia 57: 41–49.
Burge, D., Edlund, M., Manoylov, K. & Ognjanova-Rumenova, N. (2016 a) Lindavia comensis. In Diatoms of the United States. Available from: http://westerndiatoms.colorado.edu/taxa/species/cyclotella_comensis (accessed 12 March 2018)
Burge, D., Edlund, M., Manoylov, K., Ognjanova-Rumenova, N. & Hamilton, P. (2016 b) Lindavia ocellata. In Diatoms of the United States. Available from: http://westerndiatoms.colorado.edu/taxa/species/lindavia_ocellata (accessed 12 March 2018)
De Toni, G.B. & Forti, A. (1900) Contributo alla conoscenza del plancton del Lago Vetter. Atti del Reale Istituto Veneto di Scienze Lettero e Arti 59 (2): 537–568.
Dickie, G. (1882) Notes on Algae from the Himalayas. The Journal of the Linnean Society of London Botany 19: 230–232.
https://doi.org/10.1111/j.1095-8339.1882.tb00366.x
Ghimire, N.P., Jha, P.K. & Caravello, G. (2013) Water Quality of High-Altitude Lakes in the Sagarmatha (Everest) National Park, Nepal, Journal of Environmental Protection 4 (7a): 22–28.
https://doi.org/10.4236/jep.2013.47A003
Håkansson, H. (2002) A compilation and evaluation of the species in the general Stephanodiscus, cyclostephanos and Cyclotella with a new genus in the family Stephanodiscaceae. Diatom Research 17 (1): 1–139.
https://doi.org/10.1080/0269249X.2002.9705534
Lacoul, P. & B. Freedman. (2006). Recent observation of a proliferation of Ranunculus trichophyllus Chaix. in high altitude lakes of the Mount Everest region. Arctic, Antarctic and Alpine Research 38: 394–398.
<a href="https://doi.org/10.1657/1523-0430(2006)38%5b394:ROOAPO%5d2.0.CO;2">https://doi.org/10.1657/1523-0430(2006)38[394:ROOAPO]2.0.CO;2</a>
Misra, P.K., Rai, S.K., Prakash, J., Shukla, M., Tripathi, S.K. & Srivastava, M.N. (2009) Fresh water diatoms from Eastern Nepal-I, Indian hydrobiology 12 (1): 95–104.
Nakov, T., Guillory, W.X., Julius, M.L., Theriot, E.C. & Alverson, A.J. (2015) Towards a phylogenetic classification of species belonging to the diatom genus Cyclotella (Bacillariophyceae): Transfer of species formerly placed in Puncticulata, Handmannia, Pliocaenicus and Cyclotella to the genus Lindavia. Phytotaxa 217 (3): 249–264.
https://doi.org/10.11646/phytotaxa.217.3.2
Rao, S.R. (1963) A botanical tour in the Sikkim State, Eastern Himalayas. Bulletin of the Botanical Survey of India 5 (2): 165–205.
Sharma, C.M., Sharma, S., Gurung, S., Bajracharya, R.M. & Pradhan, N.S. (2010) Ecological studies on Gokyo wetlands, Sagarmatha National Park, Nepal. In: P.K. Jha & I.P. Khanal (Eds.) Contemporary Research in Sagarmatha (Mt. Everest) Region, Nepal. Nepal Academy of Science and Technology, Khumaltar, Lalitpur, pp. 139–154.
Suxena, M.R. & Venkateswarlu, V. (1968) Algae of the Cho Oyu (E. Himalaya) expedition-I, Bacillariophyceae. Hydrobiologia 32: 1.
https://doi.org/10.1007/BF00179535
Tartari, G., Previtali, L. & Tartari, G.A. (1998a) Genesis of the lake cadastre of Khumbu Himal Region (Sagarmatha National Park, East Nepal). In: Lami A. & Giussani, G. (Eds.) Limnology of high altitude lakes in the Mt Everest Region (Nepal). Memorie Dell’Istituto Italiano Di Idrobiologia 57: 139–149.
Tartari, G.A., Tartari, G. & Mosello, R. (1998b) Water chemistry of high altitude lakes in the Khumbu and Imja Kola valleys (Nepalese Himalayas). Limnology of high altitude lakes in the Mt Everest Region (Nepal). Memorie Dell’Istituto Italiano Di Idrobiologia 57: 51–76.